Sorry missed the twist on the classic
The problem with the twist is that it allows you to ignore moral duties others might think are important if you don't think they are important. It is a decent rule for avoiding bad behavior but provides no guide for positive behavior.
Since Sagan thought testing MSR with live antrax was a good idea when less hazardous and equallly effective methods existed, I'm not real convinced he was a moral authority although I generally think highly of his pro-science arguments. Have never considered Clarke a moral force just a good scifi writer. Perhaps I'm unaware of his retirement efforts prior to his lapse into senility
see ya